cleanup (structure): update code structure

client/utilities/container.js

@@ -0,0 +1,16 @@
+import React from 'react'
+import PropTypes from 'prop-types';
+
+export class Container extends React.Component {
+    constructor(props){
+        super(props);
+    }
+    render() {
+        const style = Object.assign({width: '95%', maxWidth: this.props.maxWidth || '800px', margin: '0 auto', padding: '10px'}, this.props.style || {});
+        return (
+            <div style={style}>
+              {this.props.children}
+            </div>
+        );
+    }
+}